chore: initialize repository baseline

Import the existing Electron + React + TypeScript app as the version-control
baseline before the scanner rework (C# input/capture sidecar, resolution-anchored
layout profiles, OCR preprocessing, eval harness, rescan-merge, GOOD interop).

Housekeeping in this commit:
- Remove orphaned temp_inputhelper_block.ts (duplicate of the input-helper script).
- Ignore .claude/scheduled_tasks.lock local session state.
- Add .gitattributes to normalize line endings (LF in repo).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

electron/ipc/captureHandlers.ts

@@ -0,0 +1,26 @@
+import { ipcMain } from "electron";
+import type { CaptureOptions, CaptureResult, CaptureSourceInfo, ClickResult, ScrollResult, AutomationGuard } from "../../src/types/global.js";
+
+interface CaptureCommandDependencies {
+  listSources: () => Promise<CaptureSourceInfo[]>;
+  captureSource: (sourceId: string, delayMs?: number, focusGenshin?: boolean, options?: CaptureOptions) => Promise<CaptureResult>;
+  clickScreen: (x: number, y: number) => Promise<ClickResult>;
+  scrollScreen: (notches: number, anchorX?: number, anchorY?: number) => Promise<ScrollResult>;
+  getAutomationGuard: () => Promise<AutomationGuard>;
+}
+
+export function registerCaptureHandlers({
+  listSources,
+  captureSource,
+  clickScreen,
+  scrollScreen,
+  getAutomationGuard,
+}: CaptureCommandDependencies) {
+  ipcMain.handle("capture:listSources", async () => listSources());
+  ipcMain.handle("capture:captureSource", async (_event, sourceId: string, delayMs = 0, focusGenshin = false, options?: CaptureOptions) => {
+    return captureSource(sourceId, delayMs, focusGenshin, options);
+  });
+  ipcMain.handle("automation:clickScreen", async (_event, x: number, y: number) => clickScreen(x, y));
+  ipcMain.handle("automation:scrollScreen", async (_event, notches: number, anchorX?: number, anchorY?: number) => scrollScreen(notches, anchorX, anchorY));
+  ipcMain.handle("automation:getGuard", async () => getAutomationGuard());
+}